Everything that exists (planets, stars, galaxies, plants, animals, etc.) was originally created ex-nihilo (out of nothing) by the unstoppable power and word of God. Before creation nothing existed but God. The Genesis account literally and accurately tells of the creation of all things, and is affirmed through out the Old and New Testaments.
Gen 1:1,11, 24 26-27, 2:21-23, Ex 20:11; Neh 9:6; Jer 10:12; Jn 1:3; Acts 4:24, 17:23-26; Rom 1:20; Col 1:16-17; Heb 11:3; Rev 10:6